Unmanned aerial vehicle



FIG. 1 is a perspective view showing the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a first side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a second side elevation view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for an unmanned aerial vehicle, as shown and described. 